TY  - JOUR
AU  - P. Kranz
TI  - Sandwich and extension theorems on semigroups and lattices
JO  - Commentationes Mathematicae
PY  - 1975
SP  -  193
EP  - 200
VL  - 18
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.14708/cm.v18i2.5822/
DO  - 10.14708/cm.v18i2.5822
LA  - pl
ID  - 10_14708_cm_v18i2_5822
ER  -